I read that a signal takes the easiest path.Hi Ken,
That's actually a bit of an oversimplification.
In the case of dc, if two parallel paths are present the current will divide up between the two paths in inverse proportion to the resistance of each path.
In the case of ac, the current will divide up between the two paths in inverse proportion to the impedance of each path, "impedance" at audio frequencies essentially being the combined effects of resistance, inductance, capacitance, and to a slight degree skin effect, at each particular frequency component that is present in the signal.
Paralleling two wires for each leg of the run will have the net effect of reducing overall resistance and inductance, and increasing capacitance. Except in extreme cases, capacitance is usually unimportant in a speaker cable, while resistance and inductance can be important.
Whether two parallel conductors would perform better than, worse than, or the same as a single conductor having the same values for those parameters is IMO probably not technically predictable, and experimental comparisons would probably give results that are both system-dependent and listener-dependent.
Best regards,
-- Al